Mold



Dec. 20, 1927.

E. PETERSSON MOLD Filed May 28. 1.926

v MYENTUR Patented Dec. 20, 1927.

UNITED STATES PATEN OFFICE.

ERivs'r EET EssoN, 0E oR BRo, SWEDEN.

MOL

Application filed May 28, 1926, Serial No. 'uaasa'andfm Sweden Jul 19, 1924.

This invention relates to molds, particularly adapted for casting iron and other difii'cultly fusible metals by forcing the molten metal into the mold by vacuum.

The object oft-he invention is to effect such an automatic movement of the parts of the mold as to cause said parts to move 1n a certain order towards the nozzle of the casting pipe and simultaneously towards each other and then away from the sald nozzle and away from each other, the casting being effected during the former per od and the cast object being delivered during the latter period.

The invention consists essentially in this that two jaws, movabl'y arranged in a suitable frame and to which the parts of the mold are secured, are connected to a driving device and guided in suchway as to obtain a uniform automatic movement, by which they alternately close and open the mold and simultaneously in the former case press the mold against the nozzle of the casting pipe and in the latter caseremove the mold from the said nozzle, said jaws being movably arranged in a direction towards and away from each other in a slide displaceable in the frame andtowhich the driving meansis connected. The driving means may preferably consist of a rotary diskhaving an eccentrically mounted journal or a crank engaging a slot made in'the slide and extending at right angles to the directlon oi movement of! the slide. I

The slide movestowards and away "from the nozzle of the casting pipe, when rotating the disk andthe eccentrically mounted journal, and the jaws follow the movement of the slide, in which they are capable to slide towards and away from each other.

' By providing the jaws with surfaces inclined to the direction of movementof the slide and by causing said surfaces to slide against corresponding inclined surfaces in the frame of the machine, the combined movement will be obtained, which simultaneously closes the mold and presses 1t against the nozzle of the casting pipe or opens the mold and removes it from said nozzle.

. In the annexed drawing three forms of embodiment of the invention are shown, Figs. 1, 2" and 3 showing plane views of w'ith obliquely with relation to the directionof "America is the diflerent forms of embodiment, respectively'.

5 Referring to Fig. 1, 1, designates the two jawsplaced horizontally in a suitable frame .and when moving the journal 5 in a circular path by rotating thedisk 4, the slide 3 is moved in the direction towards and away from the casting nozzleo. The jaws 1 are guided by the slide 3 in such manner as to be capable of sliding towards and away from each other. In order to obtain the combined movements of the jawsl so as to' simultaneously close the mold 7 and press it against the nozzle 6 or to openthe'mold- 7 and remove it from the nozzle, the jaws are provided with inclined surfaces 8 sliding against correspondingly shapedshoulders 9 formed in or secured to the frame 2. I j

2 shows a form. of embodiment of the invention, in which thejawsl are proslide pins 11 or the like secured tothej -frame 2 meshing with said slots 10;

r-kccording to the form of embodiment shown in Fig; 3, the jaws 1 are provided somewhat curved. slots 10, placed movement of the slide 3, pins ll or the like secured to the frame 2. meshing with said slots 10, thus causing the jaws 1 to move towards and away vfrom each other when moving them towards and away from the nozzle 6, respectively.

1 What I; claim as new and desire to secure by Letters Patentof the United Statesof 1. 111 a casting machine, particularly adapted for casting iron and other dit'n'cultly fusible,metals by'forcing the molten metal 'itror'n the metal bath by-vacuum, the comblnation of a casting" nozzle, a' divided mold,

a numbero't jaws carrying the parts of said divided mold, a slide to which said jaws are movably connected, a frame in whiehsaid slide is-movable in a direction towards and away. from said nozzle, means formoving said slide, and means for guiding said jaws so as to automatically close the divided mold when moving the slide and the jaws in the direction towards the nozzle and to automatically open said mold when moving the slide and the jaws away from said nozzle.

2. In a casting machine, particularly adapted for casting iron and other diflicultly fusible metals by forcingthe molten metal from the metal bath by vacuum, the combination of a casting nozzle, a divided mold, a number of jaws carrying the parts of'said divided mold, a slide to which said jaws are movably connected, a frame in which said slide is movable in a direction towards and away from said nozzle, means for moving saidslide, and means for guiding said jaws so as to automatically close the divided mold when moving the slide and the jaws in the direction towards the nozzle and to automatically open said mold when moving the slide and the jaws away from said nozzle, the means for moving said slide comprising an eccentric device co-operating with a slot in said slide, said slot extending transversely with respect to the direction of movement of the slide.

3. In a casting machine, particularly adapted for casting iron and other diflicultly fusible metalsby forcing the molten metal from the metal bath by vacuum, the combination of a casting nozzle, a divided mold, a number of jaws carrying the parts of said divided mold, a slide to which said jaws are movably connected, a frame in which said slide is movable in a direction towardsa-nd away from said nozzle, means for moving said slide, and means for guiding said jaws so as to automatically close the divided mold when moving the slide and the jaws in the direction towards the nozzle and to automatically open said mold when movingv the slide and the jaws away from said nozzle, said latter means comprising sliding surfaces formed on said jaws and inclined with relation to the direction of movement of the jaws and co-operating with guiding means secured to said frame. a

4. In a casting machine, particularly adapted for casting iron and other difficultly fusible metals by forcing the molten metal from the metal bath by vacuum, the, combination of a casting nozzle, a divided mold, a number of jaws carrying the parts of said divided mold, a slide to which said jaws are movably connected, a frame in which said slide is movable in a direction towards and away from said nozzle, means for moving said slide, and means for guiding said jaws so as to automatically close the divided mold when moving the slide and the jaws in the direction towards thenozzle and to automatically open said mold when moving the slide and the jaws away from said nozzle, said latter means comprising sliding surfaces formed on said jaws and in clined with relation to the direction of movement of the jaws and co-operating with guiding means secured to said frame, and the means for moving the slide comprising an eccentric device co-operating with a slot in said slide, said slot extending transversely witli rcspect to the direction of movement of the slide. 7

5. In a casting machine, particularly adapted for casting iron and other diflicultly fusible metals by forcing the molten metal from the metalbath by vacuum, the combination of a casting nozzle, a divided mold, a number of jaws carrying'the partsof said divided mold, a slide to which said jaws are 'movably connected, a frame in which said" slide is movable in a direction towards and away from said nozzle, means for moving said slide, and means for guiding said jaws so as to automatically close the divided mold when moving the slide and the jaws in the direction towards the nozzle and to automatically open said mold when moving the slide and the jaws away from said'nozzle, said latter means comprising slots made in said jaws and inclined with relation to the direction of movement of the jaws and co operating with pins sliding in said slots and secured to said frame.

6. In a casting machine, particularly adapted for casting iron and other diflicultlyq fusible metals by forcing the molten metal from the metal bath by vacuum, the combination of a casting nozzle, a divided mold, a number of jaws carrying the parts of said divided mold, a slide to which said jaws are.

movably connected, a frame in which said slide is movable in a direction towards and away from said nozzle, means for moving said slide, and means for guiding said jaws so as to automatically close the divided mold when moving the slide and the jaws in the direction towards the nozzle and to automatically open said mold when moving the slide and the jaws away from said nozzle, said latter means comprising slots made in said jaws and inclined with relation to the direction of movement of the jaws and cooperating with pins sliding in said slots and secured to said frame, and the'means for moving the slide comprising an eccentric de- 7. In a casting machine, particularly],

a number of jaws carrying the parts of said a divided mold, a slide to which said jaws are movably connected, a frame in which said slide is movable in a direction towards and away from said nozzle, means for moving said slide, and means for guiding said jaws so as to automatically close the divided mold when moving the slide and the jaws in the direction towards the nozzle and to automatically open said mold when moving the slide and the jaws away from said nozzle, said latter means comprising slots made in said jaws and inclined with relation to the direction of movement of the jaws and 10 (Jo-operating with pins sliding in said slots and secured to said frame, saidslots being curved. I c

In testimony whereof I-affix my signature.

7 ERNST PETERSSON. 

